/**
* @see
* railo.transformer.bytecode.statement.StatementBase#_writeOut(org.objectweb.asm.commons.GeneratorAdapter)
*/
public void _writeOut(BytecodeContext bc) throws BytecodeException {
GeneratorAdapter adapter = bc.getAdapter();
adapter.visitLabel(begin);
// Reference ref=null;
final int lRef = adapter.newLocal(Types.REFERENCE);
adapter.visitInsn(Opcodes.ACONST_NULL);
adapter.storeLocal(lRef);
// has no try body, if there is no try body, no catches are executed, only finally
if (!tryBody.hasStatements()) {
if (finallyBody != null) finallyBody.writeOut(bc);
return;
}
TryCatchFinallyVisitor tcfv =
new TryCatchFinallyVisitor(
new OnFinally() {
public void writeOut(BytecodeContext bc) throws BytecodeException {
_writeOutFinally(bc, lRef);
}
},
getFlowControlFinal());
// try
tcfv.visitTryBegin(bc);
tryBody.writeOut(bc);
int lThrow = tcfv.visitTryEndCatchBeging(bc);
_writeOutCatch(bc, lRef, lThrow);
tcfv.visitCatchEnd(bc);
}
@Override
public Type _writeOut(BytecodeContext bc, int mode) throws BytecodeException {
int form = VALUE;
int type = STRING;
if (name instanceof Variable && !((Variable) name).fromHash()) {
GeneratorAdapter adapter = bc.getAdapter();
String[] arr = VariableString.variableToStringArray((Variable) name, true);
if (arr.length > 1) {
form = ARRAY;
ArrayVisitor av = new ArrayVisitor();
av.visitBegin(adapter, Types.STRING, arr.length);
for (int y = 0; y < arr.length; y++) {
av.visitBeginItem(adapter, y);
adapter.push(varKeyUpperCase ? arr[y].toUpperCase() : arr[y]);
av.visitEndItem(bc.getAdapter());
}
av.visitEnd();
} else {
// VariableString.toExprString(name).writeOut(bc, MODE_REF);
String str = VariableString.variableToString((Variable) name, true);
name = LitString.toExprString(varKeyUpperCase ? str.toUpperCase() : str);
type = Variable.registerKey(bc, VariableString.toExprString(name)) ? KEY : STRING;
}
} else {
// CastString.toExprString(name).writeOut(bc, MODE_REF);
type = Variable.registerKey(bc, CastString.toExprString(name)) ? KEY : STRING;
}
// name.writeOut(bc, MODE_REF);
super._writeOut(bc, MODE_REF);
// bc.getAdapter().push(variableString);
bc.getAdapter().invokeStatic(TYPE_FUNCTION_VALUE, NEW_INSTANCE[type][form]);
return Types.FUNCTION_VALUE;
}
private void forUpdate(GeneratorAdapter adapter, int step, boolean isLocal) {
if (isLocal) {
adapter.visitVarInsn(ILOAD, i);
adapter.loadLocal(step);
adapter.visitInsn(IADD);
adapter.visitVarInsn(ISTORE, i);
} else adapter.visitIincInsn(i, step);
}
private void _writeOutFinally(BytecodeContext bc, int lRef) throws BytecodeException {
// ref.remove(pc);
// Reference r=null;
GeneratorAdapter adapter = bc.getAdapter();
// if(fcf!=null &&
// fcf.getAfterFinalGOTOLabel()!=null)ASMUtil.visitLabel(adapter,fcf.getFinalEntryLabel());
ExpressionUtil.visitLine(bc, finallyLine);
// if (reference != null)
// reference.removeEL(pagecontext);
Label removeEnd = new Label();
adapter.loadLocal(lRef);
adapter.ifNull(removeEnd);
adapter.loadLocal(lRef);
adapter.loadArg(0);
adapter.invokeInterface(Types.REFERENCE, REMOVE_EL);
adapter.pop();
adapter.visitLabel(removeEnd);
if (finallyBody != null) finallyBody.writeOut(bc); // finally
/*if(fcf!=null){
Label l = fcf.getAfterFinalGOTOLabel();
if(l!=null)adapter.visitJumpInsn(Opcodes.GOTO, l);
}*/
}
public int visitBeforeExpression(GeneratorAdapter adapter, int start, int step, boolean isLocal) {
// init
adapter.visitLabel(beforeInit);
forInit(adapter, start, isLocal);
adapter.goTo(beforeExpr);
// update
adapter.visitLabel(beforeUpdate);
forUpdate(adapter, step, isLocal);
// expression
adapter.visitLabel(beforeExpr);
return i;
}
public static void leadFlow(BytecodeContext bc, Statement stat, int flowType, String label)
throws BytecodeException {
List<FlowControlFinal> finallyLabels = new ArrayList<FlowControlFinal>();
FlowControl fc;
String name;
if (FlowControl.BREAK == flowType) {
fc = ASMUtil.getAncestorBreakFCStatement(stat, finallyLabels, label);
name = "break";
} else if (FlowControl.CONTINUE == flowType) {
fc = ASMUtil.getAncestorContinueFCStatement(stat, finallyLabels, label);
name = "continue";
} else {
fc = ASMUtil.getAncestorRetryFCStatement(stat, finallyLabels, label);
name = "retry";
}
if (fc == null)
throw new BytecodeException(
name + " must be inside a loop (for,while,do-while,<cfloop>,<cfwhile> ...)",
stat.getStart());
GeneratorAdapter adapter = bc.getAdapter();
Label end;
if (FlowControl.BREAK == flowType) end = ((FlowControlBreak) fc).getBreakLabel();
else if (FlowControl.CONTINUE == flowType) end = ((FlowControlContinue) fc).getContinueLabel();
else end = ((FlowControlRetry) fc).getRetryLabel();
// first jump to all final labels
FlowControlFinal[] arr = finallyLabels.toArray(new FlowControlFinal[finallyLabels.size()]);
if (arr.length > 0) {
FlowControlFinal fcf;
for (int i = 0; i < arr.length; i++) {
fcf = arr[i];
// first
if (i == 0) {
adapter.visitJumpInsn(Opcodes.GOTO, fcf.getFinalEntryLabel());
}
// last
if (arr.length == i + 1) fcf.setAfterFinalGOTOLabel(end);
else fcf.setAfterFinalGOTOLabel(arr[i + 1].getFinalEntryLabel());
}
} else bc.getAdapter().visitJumpInsn(Opcodes.GOTO, end);
}
private static byte[] visitEnd() {
ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_MAXS);
cw.visit(Opcodes.V1_1, Opcodes.ACC_PUBLIC, RubyIDClassName, null, "java/lang/Object", null);
Method staticBlock = Method.getMethod("void <clinit> ()V");
GeneratorAdapter staticBlockMg =
new GeneratorAdapter(Opcodes.ACC_STATIC, staticBlock, null, null, cw);
for (Map.Entry<String, String> e : idMap.entrySet()) {
cw.visitField(
Opcodes.ACC_PUBLIC + Opcodes.ACC_STATIC,
e.getValue(),
Types.RUBY_ID_TYPE.getDescriptor(),
null,
null);
staticBlockMg.push(e.getKey());
staticBlockMg.invokeStatic(
Type.getType(RubyID.class),
Method.getMethod("com.xruby.runtime.lang.RubyID intern(String)"));
staticBlockMg.putStatic(
Type.getType("L" + RubyIDClassName + ";"), e.getValue(), Types.RUBY_ID_TYPE);
}
staticBlockMg.returnValue();
staticBlockMg.endMethod();
cw.visitEnd();
return cw.toByteArray();
}
public static void getField(GeneratorAdapter mg, String s) {
String id = idMap.get(s);
if (id == null) {
if (isValidJavaID(s)) {
id = s + "ID";
} else {
id = nextID();
}
idMap.put(s, id);
}
mg.getStatic(Type.getType("L" + RubyIDClassName + ";"), id, Types.RUBY_ID_TYPE);
}
/**
* @see
* lucee.transformer.bytecode.expression.ExpressionBase#_writeOut(org.objectweb.asm.commons.GeneratorAdapter,
* int)
*/
@Override
public Type _writeOut(BytecodeContext bc, int mode) throws TransformerException {
GeneratorAdapter adapter = bc.getAdapter();
if (mode == MODE_REF) {
_writeOut(bc, MODE_VALUE);
adapter.invokeStatic(Types.CASTER, Methods.METHOD_TO_BOOLEAN_FROM_BOOLEAN);
return Types.BOOLEAN;
}
Label l1 = new Label();
Label l2 = new Label();
expr.writeOut(bc, MODE_VALUE);
adapter.ifZCmp(Opcodes.IFEQ, l1);
adapter.visitInsn(Opcodes.ICONST_0);
adapter.visitJumpInsn(Opcodes.GOTO, l2);
adapter.visitLabel(l1);
adapter.visitInsn(Opcodes.ICONST_1);
adapter.visitLabel(l2);
return Types.BOOLEAN_VALUE;
}
private void forInit(GeneratorAdapter adapter, int start, boolean isLocal) {
i = adapter.newLocal(Types.INT_VALUE);
if (isLocal) adapter.loadLocal(start, Types.INT_VALUE);
else adapter.push(start);
adapter.visitVarInsn(ISTORE, i);
}
public void visitAfterExpressionBeginBody(GeneratorAdapter adapter) {
adapter.ifZCmp(Opcodes.IFEQ, afterBody);
}
public static void createEmptyArray(GeneratorAdapter adapter) {
adapter.newInstance(Types.ARRAY_IMPL);
adapter.dup();
adapter.invokeConstructor(Types.ARRAY_IMPL, Switch.INIT);
}
@Override
void write(
final CompilerSettings settings,
final Definition definition,
final GeneratorAdapter adapter) {
final Sort sort = actual.sort;
switch (sort) {
case STRING:
adapter.push((String) constant);
break;
case DOUBLE:
adapter.push((double) constant);
break;
case FLOAT:
adapter.push((float) constant);
break;
case LONG:
adapter.push((long) constant);
break;
case INT:
adapter.push((int) constant);
break;
case CHAR:
adapter.push((char) constant);
break;
case SHORT:
adapter.push((short) constant);
break;
case BYTE:
adapter.push((byte) constant);
break;
case BOOL:
if (tru != null && (boolean) constant) {
adapter.goTo(tru);
} else if (fals != null && !(boolean) constant) {
adapter.goTo(fals);
} else if (tru == null && fals == null) {
adapter.push((boolean) constant);
}
break;
default:
throw new IllegalStateException(error("Illegal tree structure."));
}
if (sort != Sort.BOOL) {
WriterUtility.writeBranch(adapter, tru, fals);
}
}
public static void visitLabel(GeneratorAdapter ga, Label label) {
if (label != null) ga.visitLabel(label);
}
public static void pop(GeneratorAdapter adapter, Type type) {
if (type.equals(Types.DOUBLE_VALUE)) adapter.pop2();
else if (type.equals(Types.VOID)) ;
else adapter.pop();
}
/**
* @param adapter
* @param expr
* @param mode
*/
public static void pop(GeneratorAdapter adapter, Expression expr, int mode) {
if (mode == Expression.MODE_VALUE && (expr instanceof ExprDouble)) adapter.pop2();
else adapter.pop();
}
private static void createProperty(ClassWriter cw, String classType, ASMProperty property)
throws PageException {
String name = property.getName();
Type type = property.getASMType();
Class clazz = property.getClazz();
cw.visitField(Opcodes.ACC_PRIVATE, name, type.toString(), null, null).visitEnd();
int load = loadFor(type);
// int sizeOf=sizeOf(type);
// get<PropertyName>():<type>
Type[] types = new Type[0];
Method method =
new Method(
(clazz == boolean.class ? "get" : "get") + StringUtil.ucFirst(name), type, types);
GeneratorAdapter adapter = new GeneratorAdapter(Opcodes.ACC_PUBLIC, method, null, null, cw);
Label start = new Label();
adapter.visitLabel(start);
adapter.visitVarInsn(Opcodes.ALOAD, 0);
adapter.visitFieldInsn(Opcodes.GETFIELD, classType, name, type.toString());
adapter.returnValue();
Label end = new Label();
adapter.visitLabel(end);
adapter.visitLocalVariable("this", "L" + classType + ";", null, start, end, 0);
adapter.visitEnd();
adapter.endMethod();
// set<PropertyName>(object):void
types = new Type[] {type};
method = new Method("set" + StringUtil.ucFirst(name), Types.VOID, types);
adapter = new GeneratorAdapter(Opcodes.ACC_PUBLIC, method, null, null, cw);
start = new Label();
adapter.visitLabel(start);
adapter.visitVarInsn(Opcodes.ALOAD, 0);
adapter.visitVarInsn(load, 1);
adapter.visitFieldInsn(Opcodes.PUTFIELD, classType, name, type.toString());
adapter.visitInsn(Opcodes.RETURN);
end = new Label();
adapter.visitLabel(end);
adapter.visitLocalVariable("this", "L" + classType + ";", null, start, end, 0);
adapter.visitLocalVariable(name, type.toString(), null, start, end, 1);
// adapter.visitMaxs(0, 0);//.visitMaxs(sizeOf+1, sizeOf+1);// hansx
adapter.visitEnd();
adapter.endMethod();
}
public static byte[] createPojo(
String className, ASMProperty[] properties, Class parent, Class[] interfaces, String srcName)
throws PageException {
className = className.replace('.', '/');
className = className.replace('\\', '/');
className = ListUtil.trim(className, "/");
String[] inter = null;
if (interfaces != null) {
inter = new String[interfaces.length];
for (int i = 0; i < inter.length; i++) {
inter[i] = interfaces[i].getName().replace('.', '/');
}
}
// CREATE CLASS
ClassWriter cw = ASMUtil.getClassWriter();
cw.visit(
Opcodes.V1_6,
Opcodes.ACC_PUBLIC,
className,
null,
parent.getName().replace('.', '/'),
inter);
String md5;
try {
md5 = createMD5(properties);
} catch (Throwable t) {
md5 = "";
t.printStackTrace();
}
FieldVisitor fv =
cw.visitField(
Opcodes.ACC_PUBLIC + Opcodes.ACC_FINAL + Opcodes.ACC_STATIC,
"_md5_",
"Ljava/lang/String;",
null,
md5);
fv.visitEnd();
// Constructor
GeneratorAdapter adapter =
new GeneratorAdapter(Opcodes.ACC_PUBLIC, CONSTRUCTOR_OBJECT, null, null, cw);
adapter.loadThis();
adapter.invokeConstructor(toType(parent, true), CONSTRUCTOR_OBJECT);
adapter.returnValue();
adapter.endMethod();
// properties
for (int i = 0; i < properties.length; i++) {
createProperty(cw, className, properties[i]);
}
// complexType src
if (!StringUtil.isEmpty(srcName)) {
GeneratorAdapter _adapter =
new GeneratorAdapter(
Opcodes.ACC_PUBLIC + Opcodes.ACC_FINAL + Opcodes.ACC_STATIC,
_SRC_NAME,
null,
null,
cw);
_adapter.push(srcName);
_adapter.returnValue();
_adapter.endMethod();
}
cw.visitEnd();
return cw.toByteArray();
}
public static void invokeMethod(GeneratorAdapter adapter, Type type, Method method) {
if (type.getClass().isInterface()) adapter.invokeInterface(type, method);
else adapter.invokeVirtual(type, method);
}
@Override
public Type load(Context ctx) {
GeneratorAdapter g = ctx.getGeneratorAdapter();
owner.load(ctx);
List<Class<?>> argumentClasses = new ArrayList<>();
List<Type> argumentTypes = new ArrayList<>();
for (Expression argument : arguments) {
argument.load(ctx);
argumentTypes.add(argument.type(ctx));
argumentClasses.add(getJavaType(ctx.getClassLoader(), argument.type(ctx)));
}
Type returnType;
try {
if (ctx.getThisType().equals(owner.type(ctx))) {
org.objectweb.asm.commons.Method method = null;
for (org.objectweb.asm.commons.Method m : ctx.getMethods().keySet()) {
if (m.getName().equals(methodName)) {
if (m.getArgumentTypes().length == arguments.size()) {
Type[] methodTypes = m.getArgumentTypes();
boolean isSame = true;
for (int i = 0; i < arguments.size(); i++) {
if (!methodTypes[i].equals(argumentTypes.get(i))) {
isSame = false;
break;
}
}
if (isSame) {
method = m;
break;
}
}
}
}
if (method == null) throw new NoSuchMethodException();
g.invokeVirtual(owner.type(ctx), method);
return method.getReturnType();
}
Class<?> ownerJavaType = getJavaType(ctx.getClassLoader(), owner.type(ctx));
Method method =
ownerJavaType.getMethod(methodName, argumentClasses.toArray(new Class<?>[] {}));
Class<?> returnClass = method.getReturnType();
returnType = getType(returnClass);
invokeVirtualOrInterface(
g,
ownerJavaType,
new org.objectweb.asm.commons.Method(
methodName, returnType, argumentTypes.toArray(new Type[] {})));
} catch (NoSuchMethodException e) {
throw new RuntimeException(
format(
"No method %s.%s(%s). %s",
owner.type(ctx).getClassName(),
methodName,
(!argumentClasses.isEmpty() ? argsToString(argumentClasses) : ""),
exceptionInGeneratedClass(ctx)));
}
return returnType;
}
public static Type invokeScope(GeneratorAdapter adapter, Method m, Type type) {
if (type == null) type = Types.PAGE_CONTEXT;
adapter.invokeVirtual(type, m);
return m.getReturnType();
}
private void _writeOutCatch(BytecodeContext bc, int lRef, int lThrow) throws BytecodeException {
GeneratorAdapter adapter = bc.getAdapter();
int pe = adapter.newLocal(Types.PAGE_EXCEPTION);
// instance of Abort
Label abortEnd = new Label();
adapter.loadLocal(lThrow);
adapter.invokeStatic(Types.ABORT, TryCatchFinally.IS_ABORT);
// adapter.instanceOf(Types.ABORT);
adapter.ifZCmp(Opcodes.IFEQ, abortEnd);
adapter.loadLocal(lThrow);
adapter.throwException();
adapter.visitLabel(abortEnd);
// PageExceptionImpl old=pc.getCatch();
int old = adapter.newLocal(Types.PAGE_EXCEPTION);
adapter.loadArg(0);
adapter.invokeVirtual(Types.PAGE_CONTEXT, TagTry.GET_CATCH);
adapter.storeLocal(old);
// cast to PageException Caster.toPagException(t);
adapter.loadLocal(lThrow);
adapter.invokeStatic(Types.CASTER, TO_PAGE_EXCEPTION);
// PageException pe=...
adapter.storeLocal(pe);
// catch loop
Label endAllIf = new Label();
Iterator<Catch> it = catches.iterator();
Catch ctElse = null;
while (it.hasNext()) {
Catch ct = it.next();
// store any for else
if (ct.type != null
&& ct.type instanceof LitString
&& ((LitString) ct.type).getString().equalsIgnoreCase("any")) {
ctElse = ct;
continue;
}
ExpressionUtil.visitLine(bc, ct.line);
// pe.typeEqual(type)
if (ct.type == null) {
LitBoolean.TRUE.writeOut(bc, Expression.MODE_VALUE);
} else {
adapter.loadLocal(pe);
ct.type.writeOut(bc, Expression.MODE_REF);
adapter.invokeVirtual(Types.PAGE_EXCEPTION, TYPE_EQUAL);
}
Label endIf = new Label();
adapter.ifZCmp(Opcodes.IFEQ, endIf);
catchBody(bc, adapter, ct, pe, lRef, true, true);
adapter.visitJumpInsn(Opcodes.GOTO, endAllIf);
adapter.visitLabel(endIf);
}
if (ctElse != null) {
catchBody(bc, adapter, ctElse, pe, lRef, true, true);
} else {
// pc.setCatch(pe,true);
adapter.loadArg(0);
adapter.loadLocal(pe);
adapter.push(false);
adapter.push(false);
adapter.invokeVirtual(Types.PAGE_CONTEXT, TagTry.SET_CATCH3);
adapter.loadLocal(pe);
adapter.throwException();
}
adapter.visitLabel(endAllIf);
// PageExceptionImpl old=pc.setCatch(old);
adapter.loadArg(0);
adapter.loadLocal(old);
adapter.invokeVirtual(Types.PAGE_CONTEXT, TagTry.SET_CATCH_PE);
}
public static void main(final String args[]) throws Exception {
// Generates the bytecode corresponding to the following Java class:
//
// public class Example {
// public static void main (String[] args) {
// System.out.println("Hello world!");
// }
// }
// creates a ClassWriter for the Example public class,
// which inherits from Object
ClassWriter cw = new ClassWriter(0);
cw.visit(V1_1, ACC_PUBLIC, "Example", null, "java/lang/Object", null);
// creates a MethodWriter for the (implicit) constructor
MethodVisitor mw = cw.visitMethod(ACC_PUBLIC, "<init>", "()V", null, null);
// pushes the 'this' variable
mw.visitVarInsn(ALOAD, 0);
// invokes the super class constructor
mw.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "<init>", "()V");
mw.visitInsn(RETURN);
// this code uses a maximum of one stack element and one local variable
mw.visitMaxs(1, 1);
mw.visitEnd();
// creates a MethodWriter for the 'main' method
mw = cw.visitMethod(ACC_PUBLIC + ACC_STATIC, "main", "([Ljava/lang/String;)V", null, null);
// pushes the 'out' field (of type PrintStream) of the System class
mw.visitFieldInsn(GETSTATIC, "java/lang/System", "out", "Ljava/io/PrintStream;");
// pushes the "Hello World!" String constant
mw.visitLdcInsn("Hello world!");
// invokes the 'println' method (defined in the PrintStream class)
mw.visitMethodInsn(INVOKEVIRTUAL, "java/io/PrintStream", "println", "(Ljava/lang/String;)V");
mw.visitInsn(RETURN);
// this code uses a maximum of two stack elements and two local
// variables
mw.visitMaxs(2, 2);
mw.visitEnd();
// gets the bytecode of the Example class, and loads it dynamically
byte[] code = cw.toByteArray();
FileOutputStream fos = new FileOutputStream("Example.class");
fos.write(code);
fos.close();
Helloworld loader = new Helloworld();
Class<?> exampleClass = loader.defineClass("Example", code, 0, code.length);
// uses the dynamically generated class to print 'Helloworld'
exampleClass.getMethods()[0].invoke(null, new Object[] {null});
// ------------------------------------------------------------------------
// Same example with a GeneratorAdapter (more convenient but slower)
// ------------------------------------------------------------------------
cw = new ClassWriter(ClassWriter.COMPUTE_MAXS);
cw.visit(V1_1, ACC_PUBLIC, "Example", null, "java/lang/Object", null);
// creates a GeneratorAdapter for the (implicit) constructor
Method m = Method.getMethod("void <init> ()");
GeneratorAdapter mg = new GeneratorAdapter(ACC_PUBLIC, m, null, null, cw);
mg.loadThis();
mg.invokeConstructor(Type.getType(Object.class), m);
mg.returnValue();
mg.endMethod();
// creates a GeneratorAdapter for the 'main' method
m = Method.getMethod("void main (String[])");
mg = new GeneratorAdapter(ACC_PUBLIC + ACC_STATIC, m, null, null, cw);
mg.getStatic(Type.getType(System.class), "out", Type.getType(PrintStream.class));
mg.push("Hello world!");
mg.invokeVirtual(Type.getType(PrintStream.class), Method.getMethod("void println (String)"));
mg.returnValue();
mg.endMethod();
cw.visitEnd();
code = cw.toByteArray();
loader = new Helloworld();
exampleClass = loader.defineClass("Example", code, 0, code.length);
// uses the dynamically generated class to print 'Helloworld'
exampleClass.getMethods()[0].invoke(null, new Object[] {null});
}
private static void catchBody(
BytecodeContext bc,
GeneratorAdapter adapter,
Catch ct,
int pe,
int lRef,
boolean caugth,
boolean store)
throws BytecodeException {
// pc.setCatch(pe,true);
adapter.loadArg(0);
adapter.loadLocal(pe);
adapter.push(caugth);
adapter.push(store);
adapter.invokeVirtual(Types.PAGE_CONTEXT, TagTry.SET_CATCH3);
// ref=
ct.name.writeOut(bc, Expression.MODE_REF);
adapter.storeLocal(lRef);
adapter.loadLocal(lRef);
adapter.loadArg(0);
adapter.loadLocal(pe); // (...,pe.getCatchBlock(pc))
adapter.loadArg(0);
adapter.invokeVirtual(Types.PAGE_EXCEPTION, GET_CATCH_BLOCK);
adapter.invokeInterface(Types.REFERENCE, SET);
adapter.pop();
ct.body.writeOut(bc);
}
@Override
public void compile(GeneratorAdapter ga, int narg) {
ga.push(value);
}
public static void createEmptyStruct(GeneratorAdapter adapter) {
adapter.newInstance(Types.STRUCT_IMPL);
adapter.dup();
adapter.invokeConstructor(Types.STRUCT_IMPL, Page.INIT_STRUCT_IMPL);
}